Analysis of information sources in references of the Wikipedia article "JavaScript语法" in Chinese language version.
Omitting semicolons is not a good programming practice; you should get into the habit of inserting them.
In JavaScript, a variable can be declared after it has been used. In other words; a variable can be used before it has been declared.
In JavaScript, a variable can be declared after it has been used. In other words; a variable can be used before it has been declared.